Longitudinal Development of Infants' Cruising in the Home

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  • 家庭での自然観察によるつかまり歩きの縦断的発達研究
  • カテイ デノ シゼン カンサツ ニ ヨル ツカマリ アルキ ノ ジュウダンテキ ハッタツ ケンキュウ

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Abstract

The purpose of the present study was to examine the development of cruising, which had seldom been the focus of research on motor development. Naturalistic longitudinal observations were carried out in the homes of four infants, from the perspective of ecological psychology. Cruising was observed in different forms, depending on the environment. So locomotor development should be examined from a perspective of ecological psychology. Cruising behaviors were examined in terms of manual contact with objects, body direction, and duration and frequency of hand/foot motion. The results revealed a transition from quadrupedal to bipedal locomotion types in manual contact with objects. A relation between body direction and exploration behavior was found. Moreover, a bias in laterality was seen in the direction of cruising. It was suggested that the coordination of arms and lower limbs played an important role in the development of proficiency in cruising.

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